Chemistry - August 2006

people extract platinum from convertors and then sell it for scrap how can you get the platinum separated from the other parts inside a catalytic covertor???please describe the process to me if you know how

2006-08-04 13:01:37 · 2 answers · asked by PAUL9999 2

2006-08-04 11:26:05 · 17 answers · asked by Anonymous

organic chem question????????????????

2006-08-04 10:45:21 · 3 answers · asked by Anonymous

i dont know what im doing:(

2006-08-04 09:33:49 · 2 answers · asked by Anonymous

What is the main concept of optical isomerism? or Which things needed to remember when study optical isomerism in organic chemistry?

2006-08-04 08:01:03 · 2 answers · asked by star123 2

the temp changes from 52C to 273K, and the number of moles changes from 0.267mol to 0.375mol.

2006-08-04 07:31:42 · 3 answers · asked by classysexyrich 1

and a pressure of 750torr to occupy a volume of 0.75L. What is the temp at which it will burst if the pressure is 755torr at the time it breaks?

2006-08-04 07:29:42 · 2 answers · asked by classysexyrich 1

the volume of the dry gas at STP if the vapor pressure of water at 60C is 149torr

2006-08-04 07:26:46 · 3 answers · asked by hiklass07 1

the conditions are changed to STP

2006-08-04 07:25:14 · 2 answers · asked by hiklass07 1

2006-08-04 07:24:45 · 8 answers · asked by Spadesboffin 3

The bubble rises to a depth where the temp and pressure are 19C and 1.12atm. Assuming the amount of air in the bubble has not changed calculate the new volume.

2006-08-04 07:22:13 · 2 answers · asked by hiklass07 1

2006-08-04 07:12:25 · 2 answers · asked by MILAD K 1

What is the volume of this air in the lungs at 37C and 650mmHg?

2006-08-04 07:10:35 · 3 answers · asked by ameliawht 2

2006-08-04 07:09:49 · 1 answers · asked by MILAD K 1

what will happen to the volume? (increase by about 20%, decrease by 1/2, remain the same, triple..etc)

2006-08-04 07:08:37 · 2 answers · asked by ameliawht 2

What is the basic concept of optical isomerism?

2006-08-04 06:54:56 · 3 answers · asked by star123 2

i want too knew how too make a simpel emulsifier for water and oil10 emulsion .

2006-08-04 06:20:48 · 6 answers · asked by MILAD K 1

I put 3.5g of potassium chloride (KCl) in one test tube with 10 mL of water. I put it on a constant temperature bath at 80 degrees Celsius. Some of the potassium chlorate dissolved and some of it remained solid. Once all of it had dissolved, I took it off the bath, and let it cool down. I recorded the temperature at which the potassium chloride just began to crystallize. (It was 23.95 degrees C) I repeated this with three other beakers- one with 4g of potassium chloride, one with 4.5g and one with 5g.

My two questions are-
Why is it important to not allow the test solutions to boil?

and

Why is it better to determine the initial crystallization temperature during cool down rather than the temperature at which all of the salt dissolves?

2006-08-04 06:18:41 · 4 answers · asked by thoughtfulo 1

I done the water test at the pool place, The result said my Alk was to low, I had 1/2 of the of the require amount and by morning I have the green lagoon, the pump and filter will clean the water after 3 or 4 day, but the same problem occur all the time?
can some explain?

2006-08-04 05:55:45 · 6 answers · asked by pc59100 1

2006-08-04 05:31:48 · 5 answers · asked by Anonymous

EDTA was in 7up(before they changed their ingredients) I found it in cans of beans, as well as in different fertilizers and soaps.

Thru all of these substances one could be exposed to such(EDTA)

I was just wondering if anyone knew anything about such a substance or even other "tripping chemical substances" which could have been "laced" into the food supply, for whatever reason.

Serious answers please. Thanks

2006-08-04 05:26:38 · 8 answers · asked by Anonymous

please name this chemical compounds for me
and tell me y u named like this!

[H2 (PO4)]1-
W2 O5
NA N3
NO Cl
K S CN
Aa(NO3).5H2O
Ca(NH3)4 .Cl
NA CO
[Pt Cl4]2-
[Co(NH3)5 N3]
Ba F4 (BrO3)] 3-
K2 Fe2 O2

2006-08-04 05:17:34 · 4 answers · asked by Ali 1

2006-08-04 04:45:32 · 3 answers · asked by Anonymous

What safety precautions should I take. Where can I buy a cheap CO2 detector online.

2006-08-04 04:38:18 · 3 answers · asked by canislupus 4

2006-08-04 04:28:28 · 7 answers · asked by sriram 2

2006-08-04 04:02:37 · 8 answers · asked by CHILL MJ 1

Is there any trick to find out number of isomers of a compound?

2006-08-04 03:18:44 · 5 answers · asked by star123 2

2006-08-04 03:17:06 · 6 answers · asked by COOKIE 1

i m relating to orbitals and i m nt really getting it wat is it.. Its defined as the area where probabilty of finding electrons is zero. Plz can u explain me

2006-08-04 03:09:33 · 5 answers · asked by Whamper 3

2006-08-04 02:51:30 · 3 answers · asked by Anonymous